Wednesday morning will be cloudy for most with the odd patch of rain. However, throughout the day the cloud and rain will clear with some areas experiencing brighter spells.
Scotland will see lots of cloud and some outbreaks of rain but temperatures will remain fairly mild.
Some areas of Scotland such as Aberdeen and Glasgow will experience temperatures begin in the mid-teens celsius.
There will be some heavier and more persistent rain across parts of northeast England.
The southeast will also experience some heavy rain showers in the morning.
Met Office Meteorologist Alex Burkill said: “Elsewhere there will still be some shower outbreaks to watch out for and lots of murky cloudy weather too.
“As we go through the day we are going to see more persistent rain in the east gradually clearing away.
But there will still be some further outbreaks of rain following in behind.
“We are likely to have a bit of development in terms of sunshine as we go into the afternoon.”
Towards the east, the rain will be heavy at times.
However, the west – towards Northern Ireland and Wales – will experience cloud and more persistent rain sweeping in which will make its way eastwards across the UK.
Wednesday night into Thursday morning will see rain in the east.
But this will clear away and then there will be sunshine but more showers which will creep in behind.
Mr Burkill added: “It’s always going to stay quite breezy though which will take the edge off the temperatures despite them being relatively mild for the time of year.”
The Met Office will be updating their website for weather warnings and changes throughout the day.
There are currently no weather warnings in place.
The rest of the week will remain unsettled with average temperatures and patchy showers.
There is also a chance that winds could reach gale force going into the first week of October as winter draws in.
Temperatures are likely to be a little above average at the beginning of next month but it will cool off in the wind and rain.